diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2012-03-01 15:04:46 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-07 08:56:50 -0700 |
| commit | 7bfac470b517b18d496e96acc90be58353df2159 (patch) | |
| tree | e7daf536ab63883eafc14e076b848bb331f8a618 /fs | |
| parent | aef49be82379e995b42648f36dd02d70f979ef2a (diff) | |
sched: Fix nohz load accounting -- again!
commit c308b56b5398779cd3da0f62ab26b0453494c3d4 upstream.
[ backported to 3.0 by Kerin Millar <kerframil@gmail.com>]
Various people reported nohz load tracking still being wrecked, but Doug
spotted the actual problem. We fold the nohz remainder in too soon,
causing us to loose samples and under-account.
So instead of playing catch-up up-front, always do a single load-fold
with whatever state we encounter and only then fold the nohz remainder
and play catch-up.
Reported-by: Doug Smythies <dsmythies@telus.net>
Reported-by: LesÅ=82aw Kope=C4=87 <leslaw.kopec@nasza-klasa.pl>
Reported-by: Aman Gupta <aman@tmm1.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-4v31etnhgg9kwd6ocgx3rxl8@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Kerin Millar <kerframil@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions